Textile brush

ABSTRACT

A textile brush comprising a base plate having a surface supporting a shallow flexible brush insert, the base plate having an elevated rim extending away from the said surface, the rim being formed with upstanding teeth over which a marginal region of the brush insert is folded, a cover part being provided which has ribs projecting from the inside of its side walls, and the ribs being staggered relative to the said teeth, the ribs engaging in the gaps between the teeth and serving to press the folded over marginal region of the brush insert against the said rim, the side walls of the cover part being telescoped over the rim and serving to press the brush insert from the outside against the said rim.

United States Patent 1191 Krusche [4 Aug. 7, 1973 TEXTILE BRUSH 2,824,329 2/1958 Verhas /232 3,619,846 11/1971 Krusche et al..... Inventorg f Frankfurt 3,648,331 3/1972 Kruger et al. 24/113 R [73] Assignee: Allstar Verbrauchsqueter GmbH & Primary Examiner-Daniel Blum Frankfurt, Germany Attorney-Arthur O. Klein [22] Filed: Sept. 27, 1971 211 Appl. No.: 183,943 ABSTRACT A textile brush comprising a base plate having a surface 30 Foreign Application priority Data supporting a shallow flexible brush insert, the base Jan 10 973 Germany G 39 2 plate having an elevated rim extending away from the said surface, the rim being formed with upstanding 52 us. (:1 15/171 15/231 24/113 R teeth which a maigihhi iegih brush ihwi 51 1m. 01. A46!) 3/03 :A46b 9/02 is mid, a heihg Pmvided which has ribs [58] Field of Search i i 23/92 113 projecting from the inside of its side walls, and the ribs 51/391 392 {ii 6 2" 4 being staggered relative to the said teeth, the ribs en- {5/231 160 gaging in the gaps between the teeth and serving to press the folded over marginal region of the brush in- [56] References Cited sert against the said rim, the side walls of the cover part UNITED STATES PATENTS being telescoped over the rim and serving to press the brush insert from the outside against the said rim.

2,246,316 6/1941 Oharek et a1. 24/113 R 2,527,089 10/1950 Adams 51/393 X 7 Claims, 3 Drawing Figures I s 1 10 i 5 8 i; :1 I I II E 7 7 I I 5 8 m 3 3 a Q! T /11 i1Q u ;+lr 2 2 PATENTEDms 1 ma INVENTOR. Km K R Usc H E m4 (9 K2 61': Affor'ney TEXTILE BRUSH The invention relates to a textile brush, the brush back of which consists of a rigid part, made for example of plastics, in which a shallow flexible brush insert, for example, a material provided with bristles, is inserted.

Brushes are known in which a rigid plastic part holds a shallow brush element which consists of a flexible carrier, for example, a texile fabric or the like. Such a brush element can be bonded onto a rigid base plate. However, the folding over of the margin of the material around the edges of the base plate is complicated and time-consuming. In another previously proposed arrangement, the marginal region of the material of the brush element is pressed through a plastic frame against the edge of a plastic base plate and is thus held. A third plastic part is then applied on the side remote from the brush element. However, with such a brush consisting of plastic parts, the cost of making the brush increases with the number of structural parts.

It is an object of the invention to provide a textile brush which requires a minimum number of structural parts, whereby the manufacture of the brush is simplifled.

The invention consists of a textile brush comprising a base plate having a surface supporting a shallow flexible brush insert, the base plate having an elevated rim extending away from the said surface, the rim being formed with teeth over which a marginal region of the brush insert is folded, a cover part being provided which has ribs projecting from the inside of its side walls, the ribs being staggered relative. to the said teeth, the ribs engaging in the gaps between the teeth and serving to press the folded over marginal region of the brush insert against the said rim, the sidewalls of the cover part serving to press the brush insert from the outside against the said rim.

Preferably, the tips of the teeth at the edge of the elevated rim of the base plate are slightly curved outwardly. Advantageously, the edge of the elevated rim of the base plate is provided with teeth overits entire periphery. Preferably, as the brush insert there is employed a material with straight bristles or bristles lying at an inclination, such material being adhesively bonded onto a cushion backing of foam material.

When using a brush insert formed of a padded shal- I low flexible carrier with bristles'lying at an inclination, it is" important that this carrier is adhesively bonded onto the foam padding.

In order to fully disclose the invention, reference will be made to the accompanying drawings which are given by way of example, and in which:

FIG. 1 is a longitudinal vertical section through a brush of the invention;

FIG. 2 is a diagrammatic sectional illustration along lines 2-2 of FIG. 1, on a larger scale than FIG. 1, showing the manner in wich the brush insert is clamped; and

FIG. 3 is a view in perspective of the base plate.

The manner of clamping the brush insert enables a brush to be composed of only two rigid parts in addition to the brush insert, the assembly requiring only very few manual operations.

A base plate 1, preferably made of plastic material,

' is provided, the margin of plate I being elevated to wardly curved in order in this manner additionally to hold the brush element.

The second rigid part, also preferably made of plastic material, is a cover shaped upper part 6 the side walls 7 of which are provided at their inner periphery with projecting ribs 8 disposed in generally radial vertical planes. These ribs 8 are relatively wide and are arranged staggered in relation to the teeth 3 of the base plate 1, so that they engage in the tooth gaps 3a when both parts 1 and 6 are assembled, as shown in FIG. 2.

A shallow flexible brush element or insert is used. If there is provided for the body of this element a material 5 having bristles, this is adhesively bonded onto a foam padding 4. In this manner the brush material is disposed, together with the foam padding, over the edges of teeth 3 of the base plate 1. When a material having bristles is used, the bristles may be straight, that is to say, perpendicular to the general plane of the material, or they may lie at an inclination to such plane.

The padded brush element lies in the usual manner on the base plate 1 and its peripheral margin is disposed over the elevated rim 2 and over the teeth 3 at the edge of the base plate.

THe brush element 5 with its foam padding 4 is compressed and clamped bythe ribs 8 of the upper part 6 engaging in the tooth gaps 3a. FIG. 2 diagrammatically illustrates this.

The side walls 7 of the upper part 6 are telescoped over the elevated rim 2 ofthe base plate 1 and hold the interposed brush element 4, 5 firmly compressed therebetween.

Assembly is effected in a simple manner. The brush element 5 adhesively bonded onto the foam padding 4 is inserted in a correspondingly dimensioned assembly retainer with the bristle side downwardly, and the base plate 1 is applied onto its upper side. Alternatively, the procedure cnabe such that the brush element 4, 5 is inserted together with thebase plate, into the assembly retainer. Since the open space of the assembly retainer is somewhat smaller than the outer-dimension of the elevated rim 2 of the base plate 1 when provided with the bonded brush element 4, 5 the foam padding is somewhat compressed at its margin so that its upper marginal section, naturally with the bondedbrush element 5, readily folds inwardly over the teeth 3 at the edge of the base plate 1. The upper part 6 of the brush assembly is now moved downwardly from above, and its ribs 8 automatically press the brush element over the teeth and into the tooth gaps. The side walls 7 of the upper part 6engage agaisnt the brush element from the outside and press this against the elevated rim 2 of the base plate 1.

In order to give the brush the necessary firmness, depending on its size, for example, one or more interfitting sleeves and counter sleeves may be provided on the parts 1 and 9. In the illustrated embodiment, two sleeves 10, 10a extend inwardly from the lower side of the cover plate 9 of the upper part 6 of the brush, sleeves 10, 10a accurately engaging sleeves 11 and Ila which are upwardly directed from the base plate 1, by telescoping over them. The interlocking of the two brush parts can, however, alternatively take place in any other suitable manner.

Although it is convenient for all of the parts to be made of plastic material, possibly with the exception of the brush insert, other materials having the necessary ridigty can be used.

Although the invention is illustrated and described with reference to one preferred embodiment thereof, it is to be expressly understood that it is in no way limited to the disclosure of such a preferred embodiment, but is capable of numerous modifications within the scope of the appended claims.

What is claimed is:

1. A textile brush comprising a base plate having a bottom surface supporting a shallow flexible brush insert, the base plate having an elevated rim extending upwardly away from the said bottom surface, the rim being formed with circumferentially spaced teeth over which a marginal region of the brush insert is folded, a cup-shaped cover part having an upper plate and a depending side wall which has ribs projecting from its inner surface, said ribs being arranged staggered relative to the said teeth, the ribs engaging in the gaps between the teeth and serving to press the folded over marginal region of the brush insert against the said rim, the side wall of the cover part being telescoped over the rim and the folded marginal region of the insert, and compressing such marginal region of the brush insert inwardly against the said rim.

2. A brush as claimed in claim 1, wherein the teeth are upstanding and the tips of the teeth at the edge of the elevated rim of the base plate are slightly outwardly curved.

3. A brush as claimed in claim 1, wherein the edge of the elevated rim of the base plate is provided with teeth over the entire periphery of such rim.

4. A brush as claimed in claim 1, wherein the brush insert is composed of a material with bristles, the material being adhesively bonded onto a cushion backing of foam material.

5. A brush as claimed in claim 2, wherein the edge of the elevated rim of the base plate is provided with teeth over the entire periphery of such rim.

6. A brush as claimed in claim 2, wherein the brush insert is composed of a material with bristles, the material being adhesively bonded onto a cushion backing of foam material.

7. A brush as claimed in claim 3, wherein the brush insert is composed of a material with bristles, the material being adhesively bonded onto a cushion backing of foam material.

t i i l 

1. A textile brush comprising a base plate having a bottom surface supporting a shallow flexible brush insert, the base plate having an elevated rim extending upwardly away from the said bottom surface, the rim being formed with circumferentially spaced teeth over which a marginal region of the brush insert is folded, a cup-shaped cover part having an upper plate and a depending side wall which has ribs projecting from its inner surface, said ribs being arranged staggered relative to the said teeth, the ribs engaging in the gaps between the teeth and serving to press the folded over marginal region of the brush insert against the said rim, the side wall of the cover part being telescoped over the rim and the folded marginal region of the insert, and compressing such marginal region of the brush insert inwardly against the said rim.
 2. A brush as claimed in claim 1, wherein the teeth are upstanding and the tips of the teeth at the edge of the elevated rim of the base plate are slightly outwardly curved.
 3. A brush as claimed in claim 1, wherein the edge of the elevated rim of the base plate is provided with teeth over the entire periphery of such rim.
 4. A brush as claimed in claim 1, wherein the brush insert is composed of a material with bristles, the material being adhesively bonded onto a cushion backing of foam material.
 5. A brush as claimed in claim 2, wherein the edge of the elevated rim of the base plate is provided with teeth over the entire periphery of such rim.
 6. A brush as claimed in claim 2, wherein the brush insert is composed of a material with bristles, the material being adhesively bonded onto a cushion backing of foam material.
 7. A brush as claimed in claim 3, wherein the brush insert is composed of a material with bristles, the material being adhesively bonded onto a cushion backing of foam material. 